Question

A farmer has a rectangular field of length and breadth 240m and 180m respectively.
He wants to fence it with three rounds of rope.

Answer 1

perimeter of rectangular field = 2(l+b)
= 2×420
=840m
the perimeter of the rectangular field is 840m. so, farm need 840m long rope to fence the field 1 time.
total rope need to fence the field 3 times=840×3=2520m

Answer 2

the area of rectangular field
= 240*180
=43200 m^2

the perimeter of rectangular field
= 2(l+b)

=2 (240+180)

2*420
=840

the rope is one time fenced 840

so there is three times

=> 840*3
=>2520m answer

Hope its helpful